How to request a permission of type System.Net.WebPermission in ASP.NET MVC?

Question

I created a small web service that creates a HttpWebRequest to another website using a proxy and after i used the proxies i got that error:

Answer 1

I was also having this issue - and it turned out to be due to dll performing the web request having being downloaded from the web.

I had to go into the Properties of the dll in file explorer (right click> Properties) and click "Unblock" - making sure to click "Apply" and then "Ok".